ROAD RUNNER 12J RR SNOW ICE MELT BLEND 2 PACK OF 12lbs JUGS nm tools saws office supplies office supplies Electrochemical (CO) Power Source 120V AC with 2 AA Battery Backup Hush Feature Temporarily silences nuisance alarms Interconnect Capability Connects with up to 24 Kidde devices End of Life Notification Alerts after 10 years of operation Smoke Alarm Warning 3 long beeps and red LED flash CO Alarm Warning 4 quick beeps and red LED flash Low Battery Alert One chirp and amber LED flash per minute Audio Alarm 85 dB at 10 ft Operating Temperature 40°F to 100°F (4 That process allows the amide core to penetrate the ice to break it up so that it melts faster or can be scraped off the driveway with far greater ease The pellet actually allows the product to melt faster